Tau decay into a pseudoscalar and an axial-vector meson

Dai, L.R.; Roca Zamora, Luis; Oset, E.

Publication:
Tau decay into a pseudoscalar and an axial-vector meson

dc.contributor.author	Dai, L.R.
dc.contributor.author	Roca Zamora, Luis
dc.contributor.author	Oset, E.
dc.contributor.department	Física
dc.date.accessioned	2025-01-09T15:51:26Z
dc.date.available	2025-01-09T15:51:26Z
dc.date.issued	2019-05-06
dc.description	© 2019, American Physical Society. This document is the Published version of a Published Work that appeared in final form in Physical Review D. To access the final edited and published work see https://doi.org/10.1103/PhysRevD.99.096003	es
dc.description.abstract	We study theoretically the decay τ− → ντP−A, with P− a π− or K− and A an axial-vector resonance b1(1235), h1(1170), h1(1380), a1(1260), f1(1285) or any of the two poles of the K1(1270). The process proceeds through a triangle mechanism where a vector meson pair is first produced from the weak current and then one of the vectors produces two pseudoscalars, one of which reinteracts with the other vector to produce the axial resonance. For the initial weak hadronic production we use a recent formalism to account for the hadronization after the initial quark-antiquark pair produced from the weak current, which explicitly filters G-parity states and obtain easy analytic formulas after working out the angular momentum algebra. The model also takes advantage of the chiral unitary theories to evaluate the vector-pseudoscalar (VP) amplitudes, where the axial-vector resonances were obtained as dynamically generated from the vectorpseudoscalar interaction. We make predictions for invariant mass distribution and branching ratios for the channels considered.
dc.format	application/pdf	es
dc.identifier.citation	Phys. Rev. D 99, 096003 (2019)
dc.identifier.doi	https://doi.org/10.1103/PhysRevD.99.096003
dc.identifier.issn	Print: 2470-0010
dc.identifier.issn	Electronic: 2470-0029
dc.identifier.uri	http://hdl.handle.net/10201/148154
dc.language	eng	es
dc.publisher	American Physical Society
dc.relation	L. R. D. acknowledges the support from the National Natural Science Foundation of China (Grant No. 11575076) and the State Scholarship Fund of China (No. 201708210057). This work is partly supported by the Spanish Ministerio de Economia y Competitividad and European FEDER funds under Contracts No. FIS2017-84038-C2-1-P B and No. FIS2017-84038-C2-2-P B, and the Generalitat Valenciana in the program Prometeo II-2014/068, and the project Severo Ochoa of IFIC, SEV-2014-0398 (EO).	es
dc.relation.publisherversion	https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.096003
dc.rights.accessRights	info:eu-repo/semantics/restrictedAccess
dc.title	Tau decay into a pseudoscalar and an axial-vector meson	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es